I am trying to attach an entity to the ObjectContext. When I do so, the following InvalidOperationException is thrown: An object with the same key already exists in the ObjectStateManager. The Obj...

While I iterating through ObjectStateEntries I expected [t] variable name will be MY_ENTITY foreach (ObjectStateEntry entry in context.ObjectStateManager.GetObjectStateEntries(EntityState.Deleted)...

How to update ALL the dirty entities from the data store, and reset their changed values to the original store value? The method ObjectContext.Refresh requires as a parameter the entities to be re...